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| author | Grant Likely <grant.likely@secretlab.ca> | 2009-10-15 10:58:00 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-10-15 10:58:00 -0600 |
| commit | b6caf2ad7ce30648b89c1cf40d8f7cf6f4b58033 (patch) | |
| tree | 014b9f2c763711a52c21540ea49845d0ab497e01 /include/linux/of.h | |
| parent | 50436312f47f1fd2bf82c983638fe27ca7e03238 (diff) | |
| download | linux-3.10-b6caf2ad7ce30648b89c1cf40d8f7cf6f4b58033.tar.gz linux-3.10-b6caf2ad7ce30648b89c1cf40d8f7cf6f4b58033.tar.bz2 linux-3.10-b6caf2ad7ce30648b89c1cf40d8f7cf6f4b58033.zip | |
of: merge of_read_number() an of_read_ulong()
Merge common code between Microblaze and PowerPC
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'include/linux/of.h')
| -rw-r--r-- | include/linux/of.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index d5f666290f6..18e4379b8b7 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -79,6 +79,29 @@ set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de) dn->pde = de; } +/* + * OF address retreival & translation + */ + +/* Helper to read a big number; size is in cells (not bytes) */ +static inline u64 of_read_number(const u32 *cell, int size) +{ + u64 r = 0; + while (size--) + r = (r << 32) | *(cell++); + return r; +} + +/* Like of_read_number, but we want an unsigned long result */ +#ifdef CONFIG_PPC32 +static inline unsigned long of_read_ulong(const u32 *cell, int size) +{ + return cell[size-1]; +} +#else +#define of_read_ulong(cell, size) of_read_number(cell, size) +#endif + #include <asm/prom.h> /* flag descriptions */ |